Unit 2 Review

Rounding

100

Round to the Tens:

68

70

200

Round to the Hundreds:

258

300

300

Round to the Hundreds:

849

800

400

Round to the Tens:

35

40

500

Round to the Tens:

11

10

2-Steps

100

Emma had 7 marbles. She won 10 more in a game and then gave 3 to her friend.

How many marbles does she have?

14 marbles

200

Mia saved $1,200 for a new bike. She spent $350 on clothes and then earned $250 more from chores. 

How much money does she have now?

$1,800

400

Solve:

987 - 357 + 67 = G

967

500

Haley baked 875 cookies for a bake sale. She sold 530 cookies, then baked 900 more.

How many cookies does she have?

1,245 cookies

Decomposing

100

576

500

70

6

200

247 + 328 = L

200 + 300

40 + 20

7 + 8

575

300

756 - 312

756 - 300

456 - 10

446 - 2

444

400

436 + 584

400 + 500

30 + 80

6 + 4

1,020

500

903 - 124

903 - 100

803 - 20

783 - 4

779

Rearrange the Equation

100

Rearrange this as addition:

873 - b = 67

b + 67 = 873

200

Rearrange this to subtraction:

3478 + c = 3500

3500 - c = 3478

300

Rearrange this to addition:

943 - 423 = w

w + 423 = 943

400

Rearrange this to subtraction:

r + 438 = 600

600 - 438 = r

500

Rearrange this to subtraction:

e - 2 = 48302

2 + 48302 = e

Adjusting

100

Adjust:

34 + 41

75

200

Adjust: 

87 - 57

30

300

Adjust:

98 - 43

55

400

Adjust:

52 + 104

156

500

Adjust:

72 - 56

16